现代防御技术2018，Vol.46Issue(2)：114-121,185,9.DOI:10.3969/j.issn.1009-086x.2018.02.019
低信噪比下多相码信号参数估计
Parameter Estimation of Polyphase Code Radar Signal in Low SNR
刘歌 1张旭洲 1汪洪艳1
作者信息
- 1. 空军航空大学信息对抗系,吉林 长春 130022
- 折叠
摘要
Abstract
Aiming at the problem of the poor performance method in estimating the polyphase code signal parameter under low signal to noise ratio(SNR),a joint parameter estimation method based on integral quadratic phase function(IQPF) and fractional Fourier transform (FrFT) is put forward.The IQPF is proved by the formulas in theory to accumulate the polyphase code signal multiple ridge lines into one peak,and the modulated frequency rate which is estimated by IQPF is used to convert the 2D searching of FrFT into one dimension searching,so as to estimate the other parameters.Simulation results show that the method on the amount of calculation and estimation precision is superior to the traditional methods.关键词
雷达侦察/多相码信号/积分二次相位函数/分数阶傅里叶变换/低信噪比/参数估计Key words
radar reconnaissance/polyphase signal/integral quadratic phase function (IQPF)/fractional Fourier transform (FrFT)/low signal to noise ratio/parameter estimation分类
信息技术与安全科学引用本文复制引用
刘歌,张旭洲,汪洪艳..低信噪比下多相码信号参数估计[J].现代防御技术,2018,46(2):114-121,185,9.
